| NWS Forecast for: Fontana CA Issued by: National Weather Service San Diego, CA Last Update: 12:47 pm PDT Jun 13, 2026 |  |
| Tonight: Clear, with a low around 65. West wind around 5 mph becoming calm after midnight. Sunday: Sunny, with a high near 89. Light southwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph. Sunday Night: Mostly clear, with a low around 65. Southwest wind 5 to 10 mph becoming light after midnight. Monday: Sunny, with a high near 92. Light southwest wind increasing to 5 to 10 mph in the afternoon. Monday Night: Clear, with a low around 61. Southwest wind 5 to 10 mph becoming light west after midnight. Tuesday: Sunny, with a high near 92. Tuesday Night: Clear, with a low around 60. Wednesday: Sunny, with a high near 86. Wednesday Night: Clear, with a low around 59. Thursday: Sunny, with a high near 83. Thursday Night: Clear, with a low around 58. Juneteenth: Sunny, with a high near 83. Friday Night: Clear, with a low around 57. Saturday: Sunny, with a high near 82. | |
| Fontana CA 34.1°N 117.43°W (Elev. 1296 ft) | |
Visit your local NWS office at: https://www.weather.gov/sgx |
